I did. They weren't. I was lucky that they fit for 7 weeks because I had small kids. There is a preemie pattern as well. Remember you are going to have a 1/2 inch seam allowance... I guess they were a bit big for a week but I used thirsties duos and that kept everything in. No leaks. Loved that pattern but I made mine with snaps. I think the pattern has velcro? can't remember for sure irght now. Good luck.

Opps, sorry! I used a pattern from the above link to make a newborn cover. It had the scoop cut out, and you could use snaps or aplix (velcro, you know what I mean). It looked appropriate size....? :-)